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Where to find axle to crown measurements?

Old 12-09-11, 09:41 AM
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goatalope
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Where to find axle to crown measurements?

So I can get my hands on a frame only 2004 S-Works Stumpjumper HT. I'll need a fork. It originally came with a Fox Float F80X, 80mm travel. To maintain the geometry, I thought the big measurement was axle to crown. However, I can't find that spec for the F80X. Is it not as important as I think it is? Am I looking in the wrong place?

I guess I could just get a new 80mm travel fork and it'd be close, but I've also thought of going rigid...or getting something with more than 80mm travel. Yep, a lot of variables in my life right now.

https://www.specialized.com/us/en/bc/...004&spid=21243
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Old 12-09-11, 10:33 AM
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fietsbob
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You Measure. centerline of axle, to fork crown race seat.

Once your weight is on the fork there is some suspension preload sag.

that changes that distance...
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Old 12-09-11, 10:49 AM
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The problem is that I don't have the original fork.
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Old 12-09-11, 11:01 AM
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Yup can t measure what aint there , but that was the question, and that is the measurement.
its the fork, not the frame.


Go to a bike shop and see if they have a fork with the same suspension travel range.

tell them you need a fork , if its a straight suspension corrected fork replacement

for a longer travel Sus Fork the head tube will be at a lower angle,

shorter it will be at a higher angle, whether the ride feel is suitable is a personal feel.

if the steering angle and the offset result in a Trail Measurement similar
to the one the frame designers thought as right, it should feel OK.

trail is plotted on the ground ...
angle thru the steering tube axis line vs vertical line thru the hub.
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